Ok so,to describe my Problem better,here is a video link: If link does not work,link is also in the pastebin. Pastebin for Code and Link: https://pastebin.com/VSUaipnJ Ok so,as you can see,the item gets "cloned".Well,not realy,its probably just not getting deleted. I tried everything,but it either just gave me just one unchanged item,or nothing. My Goal is to change the item Lore on click. The 1st item gets deleted as planned.But I did not manage to change the item Lore of the clicked item directly,so I added a new item to the inventory,with the changed Lore. The Problem is: The unchanged Item with lore is still there. Debugs go through. Can anyone help?